The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2005
Filed:
Jul. 28, 2003
Hidetsugu Shimura, Nagano-ken, JP;
Hidetsugu Shimura, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
For optimization of a direct current developing bias Vavg, a patch image Ivn is formed whose length is longer than a circumferential length Lof a photosensitive member. From an average value of sensor outputs sampled over the length Lof the patch image, a toner density of the patch image Ivn is calculated and a value corresponding to an average value ODavg of optical densities OD is accordingly found. This cancels an influence of density variations appearing in association with rotating cycles of the photosensitive member exerted over a patch image.
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